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Investigation of Macro-Meso Mechanical Properties of Cemented Hydrate-Bearing Sandy Sediments in the South China Sea Using Discrete Element Method

文献类型：期刊论文

作者Wang, Zhigang3,4; Zhang, Xuran2; Zhang, Yan1; Yuan, Qingmeng3,4; Yang, Lin3,4; Zhang, Xuhui1; Wu, Xuemin3,4; Liang, Qianyong3,4
刊名ENERGY SCIENCE & ENGINEERING
出版日期2025-03-05
页码21
关键词discrete element method hydrate-bearing sandy sediments hydrate cementation hydrate saturation shear behavior
DOI10.1002/ese3.70047
通讯作者Liang, Qianyong(tomlqy@163.com)
英文摘要Sandy hydrate reservoirs are considered an ideal target for the extraction of marine natural gas hydrates (NGH). However, engineering geological risks, including reservoir sand production and seabed subsidence during the extraction process, present a significant challenge. In 2019, China discovered a high-concentration sandy NGH reservoir with favorable commercial development potential in the Qiongdongnan Basin of the South China Sea, establishing the region as a key focus for future exploration and development efforts. A thorough comprehension of macro-meso mechanical properties of this specific sandy NGH reservoir is essential for the safe and efficient extraction of hydrates. In this study, a novel method is proposed to calculate hydrate saturation of hydrate-bearing sandy sediments (HBSS) with hexagonal close-packed state. A series of undrained biaxial compression with flexible boundary show that hydrate cementation enhances the strength of the sample. However, an excessively high hydrate saturation is likely to induce strain softening, whereas an increase in confining pressure helps to mitigate strain softening. Hydrate cementation promotes the formation of abundant force chains. The inhomogeneous displacement, sliding, and relative rotation of the particles are the primary factors contributing to the formation of X-shaped shear bands, which is related to cemented bond breakage. The primary cause of hydrate cementation failure is tensile stress failure. External loading induces force chains to undergo buckling, fracturing, and restructuring, which governs fabric development. The research outcomes offer novel insights into the inhomogeneous deformation and macro-meso mechanical properties of HBSS at the particle-scale.
WOS关键词ARTIFICIAL METHANE-HYDRATE ; GAS HYDRATE ; NUMERICAL SIMULATIONS ; FLEXIBLE MEMBRANE ; GRANULAR MATERIAL ; DEM SIMULATIONS ; SHEAR BEHAVIOR ; TRIAXIAL TEST ; STRENGTH ; ENERGY
资助项目This research was funded by the Guangdong Major Project of Basic and Applied Basic Research (No. 2023B0303000021), the Director's research fund of the Guangzhou Marine Geological Survey (No. 2023GMGSJZJJ00002), the Science and Technology Program of Guangzh[2023B0303000021] ; Guangdong Major Project of Basic and Applied Basic Research[2023GMGSJZJJ00002] ; Director's research fund of the Guangzhou Marine Geological Survey[202103040003] ; Science and Technology Program of Guangzhou[DD20221706,DD20230065] ; Marine Geological Survey Program of China Geological Survey
WOS研究方向Energy & Fuels
语种英语
WOS记录号WOS:001438457800001
资助机构This research was funded by the Guangdong Major Project of Basic and Applied Basic Research (No. 2023B0303000021), the Director's research fund of the Guangzhou Marine Geological Survey (No. 2023GMGSJZJJ00002), the Science and Technology Program of Guangzh ; Guangdong Major Project of Basic and Applied Basic Research ; Director's research fund of the Guangzhou Marine Geological Survey ; Science and Technology Program of Guangzhou ; Marine Geological Survey Program of China Geological Survey
源URL[http://dspace.imech.ac.cn/handle/311007/100232]  
专题力学研究所_流固耦合系统力学重点实验室(2012-)
通讯作者Liang, Qianyong
作者单位1.Chinese Acad Sci, Inst Mech, Beijing, Peoples R China
2.China Geol Survey, Beijing, Peoples R China
3.China Geol Survey, Natl Engn Res Ctr Gas Hydrate Explorat & Dev, Guangzhou Marine Geol Survey, Guangzhou, Guangdong, Peoples R China
4.China Geol Survey, Guangzhou Marine Geol Survey, Guangzhou, Guangdong, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Zhigang,Zhang, Xuran,Zhang, Yan,et al. Investigation of Macro-Meso Mechanical Properties of Cemented Hydrate-Bearing Sandy Sediments in the South China Sea Using Discrete Element Method[J]. ENERGY SCIENCE & ENGINEERING,2025:21.
APA Wang, Zhigang.,Zhang, Xuran.,Zhang, Yan.,Yuan, Qingmeng.,Yang, Lin.,...&Liang, Qianyong.(2025).Investigation of Macro-Meso Mechanical Properties of Cemented Hydrate-Bearing Sandy Sediments in the South China Sea Using Discrete Element Method.ENERGY SCIENCE & ENGINEERING,21.
MLA Wang, Zhigang,et al."Investigation of Macro-Meso Mechanical Properties of Cemented Hydrate-Bearing Sandy Sediments in the South China Sea Using Discrete Element Method".ENERGY SCIENCE & ENGINEERING (2025):21.

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来源：力学研究所

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